A whip is an tricky and unusual weapon, not often seen in combat, but you have spend hours practicing with the weaponized string. You gain the following benefit's:

- You gain a +1 bonus to attack roll's made with this weapon.
- When you use a whip, its damage die changes from a d4 to a d6.
- When you hit a creature with an attack roll using a whip for the first time each turn, you can try to pull, grapple or knock prone the creature. The creature has to succeed on a dexterity or strength saving throw (DC 8 + your proficiency bonus + your strength or dexterity score) or be knock prone, grappled or pulled 5ft straight towards you, as long as you grapple a creature this way you can't attack using your whip.
(This also triggers when you hit a creature with an opportunity attack using a whip.)